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Sahni C, Seth S, Nayak AK, Singh R. Unraveling the Mystery of Multi-Oocyte Follicles: An Observational Study. Clin Ter 2024; 175:42-46. [PMID: 38358476 DOI: 10.7417/ct.2024.5032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Introduction Significant progress has been made in understanding oocyte fertilization and early developmental stages through in vitro fertilization (IVF) techniques. However, irregularities such as conjoined oocytes and binucleate giant oocytes, which are exceptions to the normal rule of one diploid female gamete per follicle, can potentially lead to chromosomal disorders in embryos and are recommended to be excluded from IVF attempts. The formation of primordial follicles during ovarian development, known as follicle assembly, is a critical process that establishes the ovarian follicle reserve. Multi-oocyte follicles (MOFs) containing two or more oocytes have been observed in various species, including humans, and their clinical significance on fertility and reproductive health remains unclear. Genetic and environmental factors, such as gene knockout and exposure to endocrine disruptors, have been implicated in MOF formation, but the mechanisms are not fully understood and require further investigation. Material & Method In this Observational study, 350 slides of ovarian tissues were scanned using an AI-based automated microscope, Grundium Ocus 20, and the TIFF images were stored in cloud storage. The slides were examined using third-party software, Pathcore Seeden Viewer, for morphometry of binovular follicles. Results In our observational study, we examined 350 ovarian tissue slides in detail by using an AI-based microscope, uncovering 22 slides from seven different tissues with binovular and multinovular oocytes. These rare multi-oocyte follicles (MOFs) challenge the conventional one-oocyte-per-follicle paradigm. MOFs are likely formed when oocytes fail to separate during cortical sex cord proliferation, regulated by factors several molecular factorsas well as environmental factors. Discussion Multiple Ovarian Follicles (MOFs) are rare phenomena where two or more oocytes exist in one follicle. They arise when oocytes fail to separate during ovarian development, which is governed by hormones such as follicle-stimulating hormone (FSH), inhibin, BMP-15, GDF-9, and GCNF. MOFs can be caused by dysregulation and exposure to chemicals such as diethylstilbestrol (DES) and isoflavones. Binovular oocytes, which occur when two oocytes are released during ovulation and are fertilised by different sperm, can result in non-identical twins, which are influenced by genetic and environmen-tal factors such as maternal age, heredity, hormonal imbalances, and assisted reproductive techniques such as in vitro fertilisation (IVF). Polynuclear oocytes with many nuclei can develop as a result of meiotic spindle defects and environmental influences. Identifying these oocyte types may aid in improving ART results by improving knowledge of the reasons of infertility and devising appropriate interventions.
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Affiliation(s)
- C Sahni
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - S Seth
- Department of Anatomy, All India Institute of Medical Sciences, Gorakhpur, India
| | - A K Nayak
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - R Singh
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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Reddy KRC, Sahni C, Singh R, Chandana H, Sharma R. Ayurvedic medicines in alleviating the symptoms of SARS-CoV-2 omicron variant in North Indian population: a regional genomic study. Drug Metab Pers Ther 2023; 38:289-291. [PMID: 37062805 DOI: 10.1515/dmpt-2023-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/27/2023] [Indexed: 04/18/2023]
Affiliation(s)
- Konduru Rama Chandra Reddy
- Department of Rasa shastra & Bhaishajya kalpana, Faculty of Ayurveda, Institute of Medical sciences, Banaras Hindu university, Varanasi, Uttar Pradesh, India
| | - Chetan Sahni
- Department of Anatomy, Institute of Medical sciences,Banaras Hindu university, Varanasi, Uttar Pradesh, India
| | - Royana Singh
- Department of Anatomy, Institute of Medical sciences,Banaras Hindu university, Varanasi, Uttar Pradesh, India
| | - Hari Chandana
- Vydehi Institute of Medical Sciences and Research Centre is in Whitefield, Bangalore, India
| | - Rohit Sharma
- Department of Rasa shastra & Bhaishajya kalpana, Faculty of Ayurveda, Institute of Medical sciences, Banaras Hindu university, Varanasi, Uttar Pradesh, India
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Sahni C, Basu Roy Chowdhury P, Devadas D, Ashish A, Singh NK, Yadav A, Kaur M, Mishra S, Vishwakarma S, Singh R. Correction: SARS-CoV-2 Mutations Responsible for Immune Evasion Leading to Breakthrough Infection. Cureus 2023; 15:c130. [PMID: 37560053 PMCID: PMC10407970 DOI: 10.7759/cureus.c130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Abstract
[This corrects the article DOI: 10.7759/cureus.29544.].
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Affiliation(s)
- Chetan Sahni
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | | | - Deepa Devadas
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Ashish Ashish
- Multidisciplinary Research Unit/Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Nitish K Singh
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Abhay Yadav
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Manpreet Kaur
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Shivani Mishra
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Shani Vishwakarma
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Royana Singh
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
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Nomani K, Borthakur D, Sahni C, Kumar R. Complete Ossification of Transverse Acetabular Ligament - Embryological and Clinical Perspective. Clin Ter 2023; 174:326-330. [PMID: 37378501 DOI: 10.7417/ct.2023.2445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Abstract Transverse acetabular ligament (TAL) is one of the important ligaments, which provide stability to the hip joint. On rare occasions, it can get ossified leading to limited mobility of the hip joint. Ossified TAL also converts acetabular notch to a foramen and neurovascular structures passing through the notch can get compressed leading to ischaemic symptoms. During routine demonstration of hip bone to undergraduate students, complete ossification of TAL was found in a right sided hip bone. Present case report with this rare finding also includes a short review of literature impressing on embryological and clinical perspectives of ossified TAL. Ossification of this ligament can be caused by defective ossification of hip bone as three secondary ossification centres develop around the acetabulum in triradiate carti-lage. Also, this can be caused due to heterotopic ossification of TAL after an inflammatory or traumatic injury. This ligament is extremely important in total hip replacement surgery being utilised in determining the position of the acetabular component. Anatomical knowledge of abnormal ossification of TAL is imperative in diagnosis and treatment of various pathologies of the hip joint.
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Affiliation(s)
- K Nomani
- All India Institute of Medical Sciences, New Delhi
| | - D Borthakur
- All India Institute of Medical Sciences, New Delhi
| | - C Sahni
- Institute of Medical Sciences, Banaras Hindu University, Varanasi; 3All India Institute of Medical Sciences, Patna
| | - R Kumar
- Institute of Medical Sciences, Banaras Hindu University, Varanasi; 3All India Institute of Medical Sciences, Patna
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Reddy KR, Sahni C, Sharma S. Antiviral Activity of Svarnvir-IV Tablet Assayed for Activity Against SARS-CoV-2 In Vitro. Cureus 2023; 15:e39421. [PMID: 37362483 PMCID: PMC10288389 DOI: 10.7759/cureus.39421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 06/28/2023] Open
Abstract
The coronavirus disease (COVID-19), caused by the virus SARS-CoV-2, has become a global pandemic in a very short time span. While several vaccines have been developed in the last year, specific treatments for CoV infection are still being explored. Thus, the situation highlights the need to develop safe and efficacious antiviral therapeutics. Ayurvedic Rasayana therapy has been traditionally used in India for its holistic healing systems and proven history of empirical use. There is emerging evidence that Ayurvedic treatment methodologies and herbal medicines may be effective strategies in combating COVID-19. The present study is aimed at evaluating the antiviral and therapeutic activity of an Ayurvedic herbomineral formulation (Svarnvir-IV tablet, 450 mg) against the SARS-CoV-2 virus in vitro. A cell-based assay was conducted to evaluate the cytotoxicity of the Svarnvir-IV tablets (Aimil Pharmaceuticals, Delhi, India) for the determination of virucidal activity assessment (at 2 hours) and therapeutic activity assessment (at 1 hour, 2 hours, and 4 hours). When incubated with SARS-CoV-2 virus at 0.1 multiplicity of infection (MoI) for two hours, Svarnvir-IV tablet exhibited virucidal activity against SARS-CoV-2 with an EC50 value of 0.0058 mg/ml. It also exhibited therapeutic activity when treated with cells infected with the SARS-CoV-2 virus (0.1 MoI) for 1 hour, 2 hours and 4 hours post-infection, with an EC50 value of 0.094 mg/ml, 0.023 mg/ml, and 0.05 mg/ml, respectively. The original supporting data obtained from this study, along with existing Ayurvedic traditional information, has shown encouraging results.
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Affiliation(s)
- K Ramachandra Reddy
- Department of Rasa Shastra, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Chetan Sahni
- Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi, IND
| | - Sanchit Sharma
- Research and Development, Aimil Pharmaceuticals, Delhi, IND
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Kumar A, Asghar A, Singh HN, Faiq MA, Kumar S, Narayan RK, Kumar G, Dwivedi P, Sahni C, Jha RK, Kulandhasamy M, Prasoon P, Sesham K, Kant K, Pandey SN. SARS-CoV-2 Omicron Variant Genomic Sequences and Their Epidemiological Correlates Regarding the End of the Pandemic: In Silico Analysis. JMIR Bioinform Biotech 2023; 4:e42700. [PMID: 36688013 PMCID: PMC9843602 DOI: 10.2196/42700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/29/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Emergence of the new SARS-CoV-2 variant B.1.1.529 worried health policy makers worldwide due to a large number of mutations in its genomic sequence, especially in the spike protein region. The World Health Organization (WHO) designated this variant as a global variant of concern (VOC), which was named "Omicron." Following Omicron's emergence, a surge of new COVID-19 cases was reported globally, primarily in South Africa. OBJECTIVE The aim of this study was to understand whether Omicron had an epidemiological advantage over existing variants. METHODS We performed an in silico analysis of the complete genomic sequences of Omicron available on the Global Initiative on Sharing Avian Influenza Data (GISAID) database to analyze the functional impact of the mutations present in this variant on virus-host interactions in terms of viral transmissibility, virulence/lethality, and immune escape. In addition, we performed a correlation analysis of the relative proportion of the genomic sequences of specific SARS-CoV-2 variants (in the period from October 1 to November 29, 2021) with matched epidemiological data (new COVID-19 cases and deaths) from South Africa. RESULTS Compared with the current list of global VOCs/variants of interest (VOIs), as per the WHO, Omicron bears more sequence variation, specifically in the spike protein and host receptor-binding motif (RBM). Omicron showed the closest nucleotide and protein sequence homology with the Alpha variant for the complete sequence and the RBM. The mutations were found to be primarily condensed in the spike region (n=28-48) of the virus. Further mutational analysis showed enrichment for the mutations decreasing binding affinity to angiotensin-converting enzyme 2 receptor and receptor-binding domain protein expression, and for increasing the propensity of immune escape. An inverse correlation of Omicron with the Delta variant was noted (r=-0.99, P<.001; 95% CI -0.99 to -0.97) in the sequences reported from South Africa postemergence of the new variant, subsequently showing a decrease. There was a steep rise in new COVID-19 cases in parallel with the increase in the proportion of Omicron isolates since the report of the first case (74%-100%). By contrast, the incidence of new deaths did not increase (r=-0.04, P>.05; 95% CI -0.52 to 0.58). CONCLUSIONS In silico analysis of viral genomic sequences suggests that the Omicron variant has more remarkable immune-escape ability than existing VOCs/VOIs, including Delta, but reduced virulence/lethality than other reported variants. The higher power for immune escape for Omicron was a likely reason for the resurgence in COVID-19 cases and its rapid rise as the globally dominant strain. Being more infectious but less lethal than the existing variants, Omicron could have plausibly led to widespread unnoticed new, repeated, and vaccine breakthrough infections, raising the population-level immunity barrier against the emergence of new lethal variants. The Omicron variant could have thus paved the way for the end of the pandemic.
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Affiliation(s)
- Ashutosh Kumar
- Department of Anatomy All India Institute of Medical Sciences-Patna Patna India
- Etiologically Elusive Disorders Research Network New Delhi India
| | - Adil Asghar
- Department of Anatomy All India Institute of Medical Sciences-Patna Patna India
- Etiologically Elusive Disorders Research Network New Delhi India
| | - Himanshu N Singh
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Systems Biology Columbia University Irving Medical Center New York, NY United States
| | - Muneeb A Faiq
- Etiologically Elusive Disorders Research Network New Delhi India
- New York University Langone Health Center Robert I Grossman School of Medicine New York University New York, NY United States
| | - Sujeet Kumar
- Etiologically Elusive Disorders Research Network New Delhi India
- Center for Proteomics and Drug Discovery Amity Institute of Biotechnology Amity University, Maharashtra Mumbai India
| | - Ravi K Narayan
- Etiologically Elusive Disorders Research Network New Delhi India
- Dr BC Roy Multi-speciality Medical Research Centre Indian Institute of Technology Kharagpur India
| | - Gopichand Kumar
- Department of Anatomy All India Institute of Medical Sciences-Patna Patna India
- Etiologically Elusive Disorders Research Network New Delhi India
| | - Prakhar Dwivedi
- Department of Anatomy All India Institute of Medical Sciences-Patna Patna India
- Etiologically Elusive Disorders Research Network New Delhi India
| | - Chetan Sahni
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Anatomy Institute of Medical Sciences Banaras Hindu University Varanasi India
| | - Rakesh K Jha
- Department of Anatomy All India Institute of Medical Sciences-Patna Patna India
- Etiologically Elusive Disorders Research Network New Delhi India
| | - Maheswari Kulandhasamy
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Biochemistry Maulana Azad Medical College New Delhi India
| | - Pranav Prasoon
- Etiologically Elusive Disorders Research Network New Delhi India
- School of Medicine University of Pittsburgh Pittsburgh, PA United States
| | - Kishore Sesham
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Anatomy All India Institute of Medical Sciences-Mangalagiri Mangalagiri India
| | - Kamla Kant
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Microbiology All India Institute of Medical Sciences-Bathinda Bathinda India
| | - Sada N Pandey
- Etiologically Elusive Disorders Research Network New Delhi India
- Department of Zoology Banaras Hindu University Varanasi India
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Kumar A, Asghar A, Dwivedi P, Kumar G, Narayan RK, Jha RK, Parashar R, Sahni C, Pandey SN. A Bioinformatics Tool for Predicting Future COVID-19 Waves Based on a Retrospective Analysis of the Second Wave in India: Model Development Study. JMIR Bioinform Biotech 2022; 3:e36860. [PMID: 36193192 PMCID: PMC9516867 DOI: 10.2196/36860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 08/26/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022]
Abstract
Background
Since the start of the COVID-19 pandemic, health policymakers globally have been attempting to predict an impending wave of COVID-19. India experienced a devastating second wave of COVID-19 in the late first week of May 2021. We retrospectively analyzed the viral genomic sequences and epidemiological data reflecting the emergence and spread of the second wave of COVID-19 in India to construct a prediction model.
Objective
We aimed to develop a bioinformatics tool that can predict an impending COVID-19 wave.
Methods
We analyzed the time series distribution of genomic sequence data for SARS-CoV-2 and correlated it with epidemiological data for new cases and deaths for the corresponding period of the second wave. In addition, we analyzed the phylodynamics of circulating SARS-CoV-2 variants in the Indian population during the study period.
Results
Our prediction analysis showed that the first signs of the arrival of the second wave could be seen by the end of January 2021, about 2 months before its peak in May 2021. By the end of March 2021, it was distinct. B.1.617 lineage variants powered the wave, most notably B.1.617.2 (Delta variant).
Conclusions
Based on the observations of this study, we propose that genomic surveillance of SARS-CoV-2 variants, complemented with epidemiological data, can be a promising tool to predict impending COVID-19 waves.
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Affiliation(s)
- Ashutosh Kumar
- Department of Anatomy All India Institute of Medical Sciences - Patna Patna India
| | - Adil Asghar
- Department of Anatomy All India Institute of Medical Sciences - Patna Patna India
| | - Prakhar Dwivedi
- Department of Anatomy All India Institute of Medical Sciences - Patna Patna India
| | - Gopichand Kumar
- Department of Anatomy All India Institute of Medical Sciences - Patna Patna India
| | - Ravi K Narayan
- Department of Anatomy Dr B C Roy Multispeciality Medical Research Center Indian Institute of Technology-Kharagpur Kharagpur India
| | - Rakesh K Jha
- Department of Anatomy All India Institute of Medical Sciences - Patna Patna India
| | - Rakesh Parashar
- India Health Lead Oxford Policy Management Limited Oxford United Kingdom
| | - Chetan Sahni
- Department of Anatomy Institute of Medical Sciences Banaras Hindu University Varanasi India
| | - Sada N Pandey
- Department of Zoology Banaras Hindu University Varanasi India
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Gupta M, Devadas D, Sahni C, Nayak A, Tiwari PK, Mishra A. Morphometric Analysis of the Proximal Femur With Its Clinical Correlation in Eastern Uttar Pradesh Region. Cureus 2022; 14:e28780. [PMID: 36225441 PMCID: PMC9532221 DOI: 10.7759/cureus.28780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2022] [Indexed: 11/06/2022] Open
Abstract
The anthropometry of the proximal femur holds great clinical significance in designing implants and prostheses for proximal femoral fractures and hip joint arthroplasties. Surgical fixation with a properly matched prosthesis plays a crucial role in improving long-term treatment outcomes and preventing post-operative complications such as osteolysis with aseptic loosening and increased load. The femur is also one of the most commonest used bones for stature estimation. Often during forensic investigations, only fragmented remains of femur are found available from which femoral length is estimated by application of linear regression equations. The estimated femoral length thus obtained is used for stature estimation of the unidentified individual. This study has measured nine bony parameters from the proximal femur in a total of 96 dry femora. These measurements include the vertical head diameter, neck diameter, neck thickness, neck length, neck shaft angle, the transverse diameter of the fovea, longitudinal diameter of the fovea, foveal depth, and the intertrochanteric line length. In addition, the total length of the femur was also measured. The results were tabulated and statistically analyzed using SPSS software, version 25. The mean femoral head diameter was observed to be 41.59±3.25 mm, mean foveal depth was found to be 2.95±0.75 mm, mean foveal transverse and longitudinal diameters were observed to be 11.38±2.35 mm and 15.94±3.37 mm, respectively. The mean neck diameter was 29.45±3.33 mm. Mean neck length and neck thickness were observed to be 36.06±4.94 mm and 27.61±2.71 mm, respectively. Neck shaft angle was noted to range from 109° to 128°, with a mean of 119.08°±5.18°. The mean length of the inter-trochanteric line was measured to be 41.92±3.9 mm. The mean femoral length was observed to be 42.11±2.91 cm. Significant positive correlations were found between the various measured proximal morphometric parameters of the femur. The length of the femur showed a maximum positive correlation with the vertical head diameter, followed by the neck diameter, thickness, and foveal depth. The findings of this study can throw further light on the existing data. They can serve as a guideline for designing better-matched prostheses and implants for hip surgeries in the eastern Uttar Pradesh population.
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Sahni C, Basu Roy Chowdhury P, Devadas D, Ashish A, Singh NK, Yadav A, Kaur M, Mishra S, Vishwakarma S, Singh R. SARS-CoV-2 Mutations Responsible for Immune Evasion Leading to Breakthrough Infection. Cureus 2022; 14:e29544. [PMID: 36312656 PMCID: PMC9592688 DOI: 10.7759/cureus.29544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES India had faced a devastating second outbreak of COVID-19 infection, in which a majority of the viral sequences were found to be of the B.1.617.2 lineage (Delta-variant). While India and the world focused on vaccination, reports of vaccine-immunity evasion by the virus, termed "breakthrough cases", emerged worldwide. Our study was focused on the primary objective to identify the mutations associated with breakthrough infections SARS-CoV-2. METHODS In our study, we extracted the SARS-CoV-2 RNA (ribonucleic acid) from reverse transcription-polymerase chain reaction (RT-PCR) positive COVID-19 patients, and 150 random samples were sent for sequencing to the Centre for Cellular & Molecular Biology, Hyderabad. Whole genome sequences of 150 SARS-CoV-2 viral samples were analyzed thoroughly. We mostly found B.1.617 and its sub-lineages in the genomic sequencing results. RESULTS AND INTERPRETATION On further analysis of patient data, it was seen that nine patients had been vaccinated against the SARS-CoV-2 previously. These nine patients had B.1.617/B.1 or A strains, and all of them had similar genomic variations in spike proteins as well as non-structural proteins (NSPs). The mutations seen in these sequences in the Spike (S), NSPs, and open reading frame (ORF) regions would have produced amino acid changes known to improve viral replication, confer drug resistance, influence host-cell interaction, and lead to antigenic drift. CONCLUSIONS Increased virulence culminating in vaccine immunity evasion may be inferred from these specific mutations. Our study adds to the growing body of evidence linking rapidly emerging mutations in the S (Spike) and ORF genes of the SARS-CoV-2 genome to immune evasion.
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Affiliation(s)
- Chetan Sahni
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | | | - Deepa Devadas
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Ashish Ashish
- Multidisciplinary Research Unit/Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Nitish K Singh
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Abhay Yadav
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Manpreet Kaur
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Shivani Mishra
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Shani Vishwakarma
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
| | - Royana Singh
- Anatomy, Institute of Medical Sciences (IMS) Banaras Hindu University (BHU), Varanasi, IND
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Sahni C, Khan S, Sharma A, Dada R. Polymorphism in BMP-15 genes associated with premature ovarian failure. J ANAT SOC INDIA 2017. [DOI: 10.1016/j.jasi.2017.08.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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